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/** @file
*
* VBox HDD container test utility - I/O data generator.
*/
/*
* Copyright (C) 2011-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef VBOX_INCLUDED_SRC_testcase_VDIoRnd_h
#define VBOX_INCLUDED_SRC_testcase_VDIoRnd_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
/** Pointer to the I/O random number generator. */
typedef struct VDIORND *PVDIORND;
/** Pointer to a I/O random number generator pointer. */
typedef PVDIORND *PPVDIORND;
/**
* Creates a I/O RNG.
*
* @returns VBox status code.
*
* @param ppIoRnd Where to store the handle on success.
* @param cbPattern Size of the test pattern to create.
* @param uSeed Seed for the RNG.
*/
int VDIoRndCreate(PPVDIORND ppIoRnd, size_t cbPattern, uint64_t uSeed);
/**
* Destroys the I/O RNG.
*
* @param pIoRnd I/O RNG handle.
*/
void VDIoRndDestroy(PVDIORND pIoRnd);
/**
* Returns a pointer filled with random data of the given size.
*
* @returns VBox status code.
*
* @param pIoRnd I/O RNG handle.
* @param ppv Where to store the pointer on success.
* @param cb Size of the buffer.
*/
int VDIoRndGetBuffer(PVDIORND pIoRnd, void **ppv, size_t cb);
uint32_t VDIoRndGetU32Ex(PVDIORND pIoRnd, uint32_t uMin, uint32_t uMax);
#endif /* !VBOX_INCLUDED_SRC_testcase_VDIoRnd_h */
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